| 000 | 00408pam a2200133a 44500 | ||
|---|---|---|---|
| 082 |
_aNASA _bCR-1653 - |
||
| 100 | _aBrown,David | ||
| 245 | 1 | _aINVESTIGATION OF THE INFLUENCE OF DUCT-MOUNTED HELMHOLTZ RESONATORS ON THE SOUND FIELD OF A MODEL DUCTED PROPELLER | |
| 260 |
_a _bNasa, Washington, D.C. _c1970 |
||
| 300 | _aV,57 | ||
| 500 | _aBound With Nasa Cr-1651-55 | ||
| 964 | _gCIRC | ||
| 997 | _aTR8248 C | ||
| 999 |
_c393308 _d393308 |
||